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ICS5342 数据表(PDF) 1 Page - Integrated Circuit Systems |
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ICS5342 数据表(HTML) 1 Page - Integrated Circuit Systems |
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1 / 36 page  Block Schematic PIXEL ADR AND MASK COLOR PALETTE 256 x 18 BIT 24 18 BYPS MUX NORM LATCH 24 COMPARE TRIPLE 6/8-BIT DAC TIMING GEN. MUX. MODE CTL 8 PLL PARAMETER & CLK0 PLL 1 PLL PARAMETER & CLK1 PLL 2X CLK0 CLK1 RED GREEN BLUE RSET VREF BUFF. LATCH MICRO- PROCESSOR INTERFACE XTAL OSC 8 16 16 BLANK* PCLK P0-P15 D0-D7 WR* RD* RS0-RS2 XIN XOUT STROBE CS0-CS2 PCLK SENSE* 5342_01.ai General Description The ICS5342 GENDAC is a combination of dual programma- ble clock generators, a 256 x 18-bit RAM, and a triple 8-bit video DAC. The GENDAC supports 8-bit pseudo color appli- cations, as well as 15-bit, 16-bit, and 24-bit True Color bypass for high speed, direct access to the DACs. The RAM makes it possible to display 256 colors selected from a possible 262,144 colors. The dual clock generators use Phase Locked Loop (PLL) technology to provide program- mable frequencies for use in the graphics subsystem. The vid- eo clock contains 8 frequencies, all of which are programmable by the user. The memory clock has two pro- grammable frequency locations. The three 8-bit DACs on the ICS5342 are capable of driving singly or doubly-terminated 75 Ω loads to nominal 0 - 0.7 volts at pixel rates up to 135 MHz. Differential and integral linearity errors are less than 1 LSB over full temperature and VDD ranges. Monotonicity is guaranteed by design. On-chip pixel mask register allows displayed colors to be changed in a single write cycle rather than by modifying the color palette. ICS is the world leader in all aspects of frequency (clock) gen- eration for graphics, using patented techniques to produce low jitter video timing. Features • Triple video DAC, dual clock generator, and 16 bit pixel port • Dynamic mode switch allows switching of color depth on a pixel by pixel basis • 24 (packed and sparse), 16, 15, or 8-bit pseudo color pixel mode supports True Color, Hi-Color, and VGA modes • High speed 256 x 6 x 3 color palette (135 MHz) with bypass mode and 8-bit DACs • Eight programmable video (pixel) clock frequencies (CLK0) • DAC power down in blanking mode • Anti-sparkle circuitry • On-chip loop filters reduce external components • Standard CPU interface • Single external crystal (typically 14.318 MHz) • Monitor sense • Internal voltage reference • 135 MHz (-3), 110 MHz (-2) & 80 MHz (-1) versions • Very low clock jitter • Two latched frequency select pins or three non-latched frequency select pins (programmable) • Hardware video checksum for manufacturing tests ICS5342 GENDAC 16-Bit Integrated Clock-LUT-DAC REV. 0.9.0 |
类似零件编号 - ICS5342 |
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类似说明 - ICS5342 |
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